Pryor Cashman adds Briana Hill, Simon Pulman and Amy Stein Simonds, all ex-Cowan DeBaets, as partners in its media and entertainment practice group; Hill and Pulman named group co-heads with James Janowitz ... Remote work platform Andela names GitLab’s Darren Murph vice president-workplace design and remote experience, newly created role ... Marchex, AI-powered sales engagement platform, taps Gemspring Capital’s Edwin Miller as CEO, and promotes Chief Operating Officer Ryan Polley to additional role of president ... Diebold Nixdorf elects President-CEO Octavio Marquez chairman, succeeding Gary Greenfield, who won't seek re-election at 2023 annual meeting ... Gamelancer Media names former Montreal Canadiens executive Kristopher Mychasiw head-global partnerships and sales ... UM media agency names Sasha Savic, ex-EssenceMediacom, global CEO … Pomeroy Technologies names Jayleen Shields, from Adyen, senior vice president-retail, new position … General Dynamics elects Richard Clarke, retired Army general, director.